Charging inlet

Abstract

To provide a charging inlet that improves ease of assembly while ensuring waterproofing. [Solution] The charging inlet according to the present disclosure comprises a housing that has a detachable charging plug and holds a connection terminal inside, a plurality of wiring components that are inserted into the housing from outside through a wiring guide formed on the outer surface of the outer wall of the housing, a plurality of waterproof plugs that are inserted together with the corresponding wiring components into a plurality of wiring passages formed in the wiring guide and that close the wiring passages, and a cap member that is attached to an external opening in the wiring guide that opens to the outside of the housing and has a plurality of contact portions that can contact the waterproof plugs in the wiring passages from the external opening side.

Description

Technical Field

[0001] Embodiments of the present invention relate to a charging inlet.

Background Art

[0002] Conventionally, connectors installed in vehicles such as electric vehicles and plug-in hybrid vehicles have been proposed to supply (charge) power from outside the vehicle to a battery mounted in the vehicle (see, for example, Patent Document 1). This type of connector is generally also called a charging inlet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a charging inlet, it is expected to facilitate assembly while ensuring waterproofness.

[0005] One embodiment provides a charging inlet with improved assembly property while ensuring waterproofness.

Means for Solving the Problems

[0006] A charging inlet according to one embodiment includes a housing in which a charging plug is detachable and which holds connection terminals inside, a plurality of wiring components inserted into the housing from outside the housing through a wiring guide formed on the outer surface side of the outer wall portion of the housing, a plurality of waterproof plugs inserted into corresponding wiring components and inserted into a plurality of wire routing passages formed in the wiring guide to block the wire routing passages, and a cap member attached to an external opening that opens outside the housing in the wiring guide and having a plurality of contact portions that can contact the waterproof plugs in the wire routing passages from the external opening side. [Effects of the Invention]

[0007] According to one embodiment, a charging inlet can be provided that improves ease of assembly while ensuring waterproofness. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a charging inlet according to one embodiment of the present invention. [Figure 2] This is a perspective view of the charging inlet shown above from a different direction. [Figure 3] This is a cross-sectional view of the charging inlet shown above, along the axial direction from the left to the center. [Figure 4] This is a cross-sectional view of the left and right sides of the charging inlet shown above, along the axial direction. [Figure 5] This is a perspective view of the wiring guide with the cap removed. [Modes for carrying out the invention]

[0009] Specific embodiments of the present invention will be described below with reference to the figures. In the following description, components having the same or similar functions will be denoted by the same reference numerals. Duplication of these components may be omitted. Note that the components described below do not limit the scope of the embodiments.

[0010] Figures 1 and 2 are perspective views of a charging inlet 1 according to one embodiment of the present invention. Figure 3 is a cross-sectional view of the left and right central portions of the charging inlet 1 along the axial direction. Figure 4 is a cross-sectional view of the left and right side portions of the charging inlet 1 along the axial direction. Figure 5 is a perspective view of the state with the cap member 40 removed from the lower wiring guide 35. In this specification, arrow X indicates the left-right direction, arrow Y indicates the front-back direction, and arrow Z indicates the up-down direction.

[0011] The charging inlet 1 shown in Figures 1 and 2 is a connector installed in vehicles equipped with batteries, such as electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs), and is connected to the wires extending from the battery installed in the vehicle. A mating connector, such as a charging plug (not shown), is detachably mated into the mating recess 63 (see Figure 1, etc.) of the charging inlet 1. The mating connector is connected to the wires extending from a power supply device outside the vehicle. By connecting this mating connector to the charging inlet 1, power is supplied to the battery from the power supply device outside the vehicle, and the battery is charged.

[0012] In this embodiment, the mating direction (insertion / removal direction) of the charging inlet 1 and the mating connector (not shown) will be described as the front-to-back direction. In the front-to-back direction, the mating connector side is considered the front, and the charging inlet 1 side is considered the rear. That is, the mating connector is mated and connected to the charging inlet 1 by moving from front to rear, and removed by moving in the opposite direction. The mating direction may be inclined upwards relative to the horizontal direction. Left and right in the left-to-right direction refer to left and right when facing forward.

[0013] As shown in Figures 1 and 2, the charging inlet 1 comprises a pair of terminal wires 10 and a housing 90 that accommodates the terminals 12 of the pair of terminal wires 10 and holds the pair of terminal wires 10. Referring also to Figure 4, the pair of terminal-equipped wires 10 have one end of each pair of wires 11 connected to the pair of terminals 12. The other ends of the pair of wires 11 are connected to a battery (not shown). The wires 11 consist of a conductor core wire 11a and an insulating resin sheath 11b covering the conductor core wire 11a. The wires 11 are held in the housing 90 via a rubber stopper 11c.

[0014] The pair of terminals 12 have identical configurations. Each terminal 12 extends linearly along the front-to-back direction. The terminals 12 are spaced apart from each other and arranged in the left-to-right direction. Each terminal 12 is inserted into and held within a pair of terminal holding parts 31, which will be described later. For example, each terminal 12 is provided with a cylindrical female terminal portion 16 (see Figure 4) that protrudes forward from its front end surface. Of the pair of terminals 12, the female terminal portion 16 of one terminal 12 functions as the anode terminal, and the female terminal portion 16 of the other terminal 12 functions as the cathode terminal. When the charging inlet 1 is mated with the mating connector, the female terminal portion 16 of one terminal 12 and the female terminal portion 16 of the other terminal 12 are connected to the anode male terminal portion and the cathode male terminal portion (neither shown) of the mating connector, respectively. The rear ends of a pair of terminals 12 are connected to one end of the electric wire 11. The conductor core wire 11a exposed at one end of the electric wire 11 is connected to the rear ends of the terminals 12 either directly or via a specified conductor component. This configuration electrically connects the terminals 12 to one end of the electric wire 11.

[0015] <Housing 90> As shown in Figures 1 and 2, the housing 90 comprises a base holder 50, a rear holder 80, an inner housing body 60, and an outer housing body 70. Each of the base holder 50, rear holder 80, inner housing body 60, and outer housing body 70 is a skeletal component of the housing 90 and forms the outer surface of the housing 90.

[0016] The base holder 50 functions to hold a pair of terminal-equipped electric wires 10 in an insulated state with a gap in the width direction between them. The base holder 50 has a resin holder 30 which is a resin molded product.

[0017] The resin holder 30 absorbs and dissipates the heat generated in the pair of terminals 12 and also functions to insulate and protect the pair of terminals 12. The resin holder 30 integrally includes a pair of terminal holding portions (holder main bodies) 31 arranged in the width direction (left - right direction) and a connecting portion 32 that connects the pair of terminal holding portions 31 in the width direction. Each terminal holding portion 31 has a substantially cylindrical shape extending in the front - rear direction. The terminals 12 are inserted into the pair of terminal holding portions 31 from the rear, respectively.

[0018] The connecting portion 32 connects the pair of terminal holding portions 31. An upper wiring guide 48 that protrudes upward is provided on the upper outer surface (upper surface) 32a of the connecting portion 32, and a lower wiring guide 35 that protrudes downward is provided on the lower outer surface (lower surface) 32b of the connecting portion 32. The upper and lower surfaces 32a, 32b of the connecting portion 32 in the embodiment are planes substantially parallel to the front - rear direction Y and the left - right direction X.

[0019] The upper wiring guide 48 has a function of guiding the routing of the wire of an electrical wire component (for example, a thermistor 77 for detecting terminal temperature, etc.) different from the charging wire 10. A cap member 49 is attached to the upper wiring guide 48. The lower wiring guide 35 has a function of guiding the routing of the wire of an electrical wire component (for example, a ground wiring 41a, various signal wirings 42a, etc.) different from the charging wire 10. A cap member 40 is attached to the lower wiring guide 35.

[0020] A rear holder 80 is attached to the rear end portion of the base holder 50. The rear holder 80 is a resin - molded product, which is assembled to the base holder 50 from the rear and functions to hold the pair of terminal - attached wires 10 in a state spaced apart in the width direction. <000009​An inner housing body 60 is provided in front of the base holder 50, with a size that surrounds the outside of the pair of terminal holding portions 31 when viewed from the front-rear direction. The inner housing body 60 is disc-shaped with its thickness direction oriented in the front-rear direction, and the front end of the base holder 50 is connected to its rear surface. The inner housing body 60 is, for example, a resin molded product integrally formed from the same material as the base holder 50. Fastening portions are provided on both the left and right sides of the upper and lower parts of the inner housing body 60 for fastening and fixing to the outer housing body 70 with bolts oriented in the front-rear direction.

[0022] The outer housing body 70 is assembled to the inner housing body 60 from the front and also serves to fix the entire housing 90 to a mounting target (not shown) provided on the vehicle. The outer housing body 70 is a resin molded product and has a cylindrical tubular portion 71 that extends in the front-rear direction. The cylindrical portion 71 serves to form the fitting recess 63 of the charging inlet 1.

[0023] On the rear wall (bottom wall) of the mating recess 63, a pair of cylindrical female terminal housings (not shown) are provided, protruding forward, corresponding to the female terminal portions 16 of the pair of terminals 12. Each female terminal housing is located within the mating recess 63 and houses the female terminal portion 16 inside.

[0024] The outer housing body 70 has a flange portion 72 that extends radially outward from the cylindrical portion 71. The flange portion 72 is rectangular when viewed from the front-rear direction. Bolt insertion holes 73 that penetrate in the front-rear direction are formed at each corner of the flange portion 72. Bolts (not shown) for fixing the charging inlet 1 to the mounting target part of the vehicle are inserted through the bolt insertion holes 73.

[0025] The charging inlet 1 is equipped with an actuator 75 to prevent the mating connector from becoming disconnected when connected. The actuator 75 is mounted at the bottom of the charging inlet 1. The actuator 75 is equipped with a locking pin 75a that can be inserted into a designated location on the mating connector in a direction perpendicular to the mating direction (e.g., vertical direction). The actuator 75 is operated by a drive signal from a control device (not shown) to extend and retract the locking pin 75a relative to the mating connector. This configuration prevents the mating connector from becoming accidentally or intentionally disconnected during battery charging, improving safety and ensuring that each charging cycle is performed reliably. The actuator 75 is an independent unit and is fixed to the housing 90 with bolts and nuts or the like.

[0026] A lid 76 is attached to the front side of the outer housing body 70 to open and close the front opening of the cylindrical portion 71. The lid 76 is rotatable around a hinge shaft 76a that is located on one side of the cylindrical portion 71 (left side in the figure) and extends vertically. A locking member 76b is located on the other side of the cylindrical portion 71 (right side in the figure) to hold the lid 76 in the closed position.

[0027] <Lower wiring guide 35> Referring to Figures 3 to 5, a ground wire 41a and a pair of left and right signal wires 42a are arranged on the lower surface 32b side of the connecting portion 32 of the housing 90. Each wire 41a and 42a extends in the front-rear direction along the lower surface 32b of the connecting portion 32. Below the front of the connecting portion 32, a lower wiring guide 35 is provided that covers the area around the mounting portions 41b and 42b of each wiring 41a and 42a to the housing 90 and guides the routing path of each wiring 41a and 42a.

[0028] The lower wiring guide 35 has a cylindrical central guide body 35a and left and right guide bodies 35b. The circular cross-sectional space within the central guide body 35a serves as a wiring passage K1 for routing ground wiring 41a from the mounting portion 41b over a specified length. The circular cross-sectional spaces within the left and right guide bodies 35b serve as wiring passages K2 for routing signal wiring 42a from the mounting portion 42b over a specified length.

[0029] The front end of the lower wiring guide 35 abuts against and is joined to the rear of the inner housing body 60. Each wiring passage K1 and K2 terminates at its front (rear) of the inner housing body 60. The rear ends of each wiring passage K1 and K2 are open to the rear at the rear end of the lower wiring guide 35. Hereinafter, the rear end of the lower wiring guide 35 will be referred to as the rear opening 36.

[0030] A cylindrical rubber plug (waterproof plug) 37 is inserted into the middle section (not limited to the center) of the cable routing passage K1 along with the ground wiring 41a. The rubber plug 37 has its outer surface in close contact with the inner surface of the guide body 35a, preventing water from entering the rear (front) side of the cable routing passage K1. The rubber plug 37 has an insertion hole 37a through which the ground wiring 41a is inserted. By setting the inner surface of the insertion hole 37a to be in close contact with the outer surface of the ground wiring 41a, water is prevented from entering through the insertion hole 37a.

[0031] A cylindrical rubber stopper (waterproof plug) 38 is inserted into the middle section (not limited to the center) of the cable routing passage K2 along with the signal wiring 42a. The rubber stopper 38 has its outer surface in close contact with the inner surface of the guide body 35b, preventing water from entering the rear (front) side of the cable routing passage K2. The rubber stopper 38 has an insertion hole 38a through which the signal wiring 42a is inserted. By setting the inner surface of the insertion hole 38a to be in close contact with the outer surface of the signal wiring 42a, water is prevented from entering through the insertion hole 38a.

[0032] Referring to the cross-section, the lower wiring guide 35 comprises a cylindrical guide body 35a and left and right guide members 35b, a pair of side wall portions 35c that form the sides of the guide body 35a on the left and right outer sides of the left and right guide members 35b, and a temporary wall portion 35d that spans between the upper ends of the pair of side wall portions 35c.

[0033] The lower wiring guide 35 has a substantially constant cross-section and extends in the front-rear direction. The lower wiring guide 35 is formed not only on the lower surface 32b of the connecting portion 32, but also on the left and right inner sides of the lower outer surface 31a of the left and right terminal holding portions 31. Hereinafter, the lower surface 32b of the connecting portion 32 and the left and right inner sides of the lower outer surface 31a of the left and right terminal holding portions 31 will be referred to as the outer surface 32C.

[0034] In a cross-sectional view perpendicular to the front-to-back direction of the lower wiring guide 35, the area enclosed by the lower part of the central guide body 35a, the left and right inner sides of the lower parts of the left and right guide bodies 35b, and the erection wall portion 35d is defined as a weight-reducing space K3.

[0035] The temporary wall section 35d is curved in an arc shape so as to follow the outer shape of the inner housing body 60 when viewed from the front or back direction. Locking projections 35c1 and 35d1 for securing the cap member 40 are provided on the left and right outer sides of the pair of side wall portions 35c, and on both the left and right sides of the erection wall portion 35d.

[0036] A cap member 40 is attached to the rear opening 36 of the lower wiring guide 35 to partially close the opening and prevent the rubber stoppers 37 and 38 in the wiring passages K1 and K2 from coming loose. The cap member 40 has a shape similar to the rear view shape of the rear opening 36 and comprises a rear wall portion 43 having an inverted U-shaped central notch 41 and left and right notches 42 that open downward when viewed from the front and rear directions, a pair of left and right side wall portions 44 extending forward from the outer end of the rear wall portion 43, and a curved wall portion 45 extending forward from the lower end of the rear wall portion 43.

[0037] The side wall portion 44 is equipped with a cap-side locking piece 46 that, together with the locking projection 35c1 of the side wall portion 35c of the lower wiring guide 35, constitutes a locking structure 46A. The curved wall portion 45 is equipped with a cap-side locking piece 47 that, together with the locking projection 35d1 of the erected wall portion 35d of the lower wiring guide 35, forms a second locking structure 47A. Between the side wall portion 44 and the curved wall portion 45, there is a shoulder portion 45a that is bent when viewed from the front-rear direction. Between the left and right cap-side locking pieces 47 of the curved wall portion 45, there is a central projection 45b.

[0038] When viewed from the front-to-back direction, the curved wall portion 45 has left and right shoulder portions 45a, left and right cap-side locking pieces 47, and a central projection 45b arranged so as to follow the mounting wall portion 35d of the lower wiring guide 35 (curving in an overall arc shape).

[0039] The front side of the rear wall portion 43 is provided with rubber plug contact portions (plug contact portions) 43a and 43b that protrude forward toward each cable routing passage K1 and K2, are inserted into each guide body 35a and 35b, and can abut against the rear end surfaces of the rubber plugs 37 and 38.

[0040] Each notch 41, 42 is formed to avoid the corresponding electric wire (ground wire 41a or signal wire 42a) when the cap member 40 is attached to the lower wiring guide 35. At this time, the portion of the rear wall portion 43 along the lower inner circumference of each notch 41, 42 (hereinafter referred to as the inner circumference portion of the notch) overlaps with the lower outer circumference portion of the corresponding rubber stoppers 37, 38. From this inner circumference portion of the notch, U-shaped rubber stopper contact portions 43a, 43b extend forward in a rear view, protruding forward. The internal space spanning each notch 41, 42 and the rubber stopper contact portions 43a, 43b extends vertically with a constant width from left to right, allowing the corresponding wiring 41a, 42a to be easily inserted and removed in the vertical direction.

[0041] The cap member 40 has the effect of suppressing the bending of each wiring 41a, 42a near each rubber stopper 37, 38 so as not to affect the sealing performance of each rubber stopper 37, 38 when tension is applied in the bending direction during routing of each wiring 41a, 42a. Because the notches 41 and 42 through which each wire 41a and 42a passes are U-shaped, the cap member 40 cannot prevent the upward bending of each wire 41a and 42a. However, the housing 90 is close to the top of each wire 41a and 42a, and the upward bending of each wire 41a and 42a is suppressed by the housing 90. Therefore, the influence of each rubber stopper 37 and 38 on the sealing performance of each wire 41a and 42a is minimized in all directions.

[0042] <Assembly procedure for cap component 40> Next, the assembly procedure for the cap member 40 will be explained. The cap member 40 can be attached to the lower wiring guide 35 with the wirings 41a and 42a already assembled to the housing 90. That is, when attaching the cap member 40 to the lower wiring guide 35, even if the wirings 41a and 42a have already been routed, these wirings 41a and 42a can be routed from the openings of the notches 41 and 42 of the cap member 40 to the central part in the vertical direction (the part located in the extension direction of the wiring insertion part). With this configuration, compared to the case where the wiring insertion part of the cap member 40 is a hole shape, it is not necessary to pre-pass the wirings 41a and 42a through the wiring insertion part of the cap member 40, and the assembly of the cap member 40 can be made easier.

[0043] The lower wiring guide 35 has a large left-right width relative to its vertical width, which helps to suppress misalignment of the mounting position of the cap member 40, tilting in the left-right direction, and rotation around the wiring. In particular, because the notch 41 opens upward, there is a risk that the cap member 40 may float downward even when the wires 41a and 42a are inserted through it, but the locking structure 46A on the left and right side walls 44 of the lower wiring guide 35 stably suppresses the floating of the cap member 40. Even with the configuration in which the notches 41 and 42 open upward, the housing 90 is close to the bottom of the cap member 40, and water ingress from above is suppressed by the housing 90.

[0044] Furthermore, the lower wiring guide 35 and the cap member 40 have second locking structures 47A on both the left and right sides of their lower ends (erect wall portion 35d, curved wall portion 45). That is, the second locking structures 47A are provided in a location that avoids the downward-facing peak of the lower wiring guide 35 and the cap member 40. This configuration suppresses the downward-facing protruding shape (peak shape) of the lower wiring guide 35 and the cap member 40, making it easier to mold the housing 90 and the cap member 40. The lower wiring guide 35 and the cap member 40 have second locking structures 47A on both the left and right sides of their lower ends, as well as locking structures 46A on the left and right side walls 44, thereby strengthening the locking of the lower wiring guide 35 and the cap member 40 on both sides and enabling the cap member 40 to be stably fixed.

[0045] <Effects and Actions> One embodiment of the charging inlet 1 includes a housing 90 that has a detachable charging plug and holds a connection terminal 12 inside, a plurality of wiring components (ground wiring 41a, signal wiring 42a) that are inserted into the housing 90 from outside the housing 90 through a lower wiring guide 35 formed on the outer surfaces 31a, 32b of the outer wall portion (terminal holding portion 31, connecting portion 32) of the housing 90, a plurality of waterproof plugs (rubber plugs 37, 38) that are inserted together with the corresponding wiring components into a plurality of wiring passages K1, K2 formed in the lower wiring guide 35 and close the wiring passages K1, K2, and a cap member 40 that is attached to an external opening 36 in the lower wiring guide 35 that opens to the outside of the housing 90 and has a plurality of contact portions 43a, 43b that can contact the waterproof plugs 37, 38 in the wiring passages K1, K2 from the external opening 36 side.

[0046] In this configuration, in the charging inlet 1, where multiple wiring components such as ground wiring 41a and signal wiring 42a are arranged from the lower wiring guide 35 into the housing 90, the multiple wiring passages K1 and K2 within the lower wiring guide 35 are sealed watertight with waterproof plugs 37 and 38 through which the respective wirings 41a and 42a are inserted, ensuring a tight seal within the housing 90. The external opening 36 of the lower wiring guide 35 is sealed with a cap member 40, and the contact portions 43a and 43b of the cap member 40 press against the waterproof plugs 37 and 38 in the wiring passage K1, preventing the waterproof plugs 37 and 38 from falling out. Even if the wiring components are bent (vibrated), the bending force is received by corresponding notches 41 and 42 in front of the waterproof plugs 37 and 38, so the bending force of the wiring components is less likely to be applied to the waterproof plugs 37 and 38, ensuring good waterproofing. Since a single cap member 40 holds multiple rubber stoppers 37, 38, the assembly workability of the charging inlet 1 can be improved.

[0047] In one embodiment of the charging inlet 1, the cap member 40 has a plurality of U-shaped notches 41, 42 that open towards the outer wall portion in a second direction (vertical direction Z) that intersects with the outer surfaces 31a, 32b of the outer wall portion (particularly perpendicular to the lower surface 32b of the connecting portion 32) when viewed from a first direction (front-rear direction Y) along the outer surfaces 31a, 32b of the outer wall portion 31, 32, and a corresponding wiring component is inserted into each of the notches 41, 42.

[0048] With this configuration, the insertion portion for the wiring components in the cap member 40 is a U-shaped notch that opens towards the outer wall side of the housing 90. Therefore, with the wiring components assembled to the lower wiring guide 35, the cap member 40 can be attached to the lower wiring guide 35 while inserting the wires 41a and 42a into the notches 41 and 42. This configuration makes it possible to assemble the cap member 40 without pre-threading the wires, and eliminates the need to pinch the wires in the cap member 40, thereby improving the ease of assembly of the charging inlet 1.

[0049] In one embodiment of the charging inlet 1, the housing 90 includes a base holder 50 that extends in a first direction (front-rear direction Y) and accommodates a pair of charging connection terminals 12. The base holder 50 is cylindrical and extends in the first direction and includes a pair of holder bodies (terminal holding parts) 31 that hold the connection terminals 12, and an enlarged holder part (inner housing body 60) to which one end of the terminal holding part 31 in the first direction is connected and which has an enlarged shape that overlaps with the terminal holding part 31 when viewed from the first direction. The lower wiring guide 35 extends in a third direction (left-right direction X) that intersects with the second direction (up-down direction Z) when viewed from the first direction, and is arranged across the outer circumference of the pair of holder bodies 31, with the width in the third direction being wider than the width in the second direction.

[0050] With this configuration, the lower wiring guide 35 is provided wider in the third direction relative to the second direction due to the parallel arrangement of the terminal holding portion 31. As a result, the cap member 40 attached to the external opening 36 of the lower wiring guide 35 is prevented from moving in the rotational direction when viewed from the first direction. This configuration enables stable attachment of the cap member 40.

[0051] In one embodiment of the charging inlet 1, the lower wiring guide 35 includes a guide outer wall portion (supporting wall portion) 35d that extends in a third direction at a position spaced apart from the housing 90 in a second direction when viewed from a first direction and curves along the outer shape of the holder enlargement portion 60, and a pair of side wall portions 44 that extend in a second direction toward the terminal holding portion 31 from the end of the guide outer wall portion 35d in the third direction, and each of the pair of side wall portions 44 is provided with a locking structure 46A that locks the cap member 40 and restricts its detachment in the first direction.

[0052] With this configuration, by providing a locking structure 46A for locking the cap member 40 on the side walls 44 on both sides in the third direction of the lower wiring guide 35, stable mounting of the cap member 40, which is long in the third direction, can be achieved. In addition, it is possible to prevent the cap member 40 from floating up on the opposite side of the openings of the notches 41 and 42, and to suppress the cap member 40 from rotating around the wiring.

[0053] In one embodiment of the charging inlet 1, the erection wall portion 35d of the lower wiring guide 35 is arc-shaped when viewed from the first direction, following the outer shape of the holder enlargement portion 60, and a pair of second locking structures 47A are provided on both sides of the erection wall portion 35d that avoid the central part in the third direction (parts closer to the side wall portion 35c than the central part).

[0054] With this configuration, by providing a pair of second locking structures 47A on both sides of the guide outer wall portion 35d, the pair of second locking structures 47A on the guide outer wall portion 35d can be positioned close to the locking structures 46A on the left and right side wall portions 35c, respectively, and the cap member 40 can be firmly attached.

[0055] In the above embodiment, an example was shown in which the present invention is applied to a lower wiring guide 35 provided on the upper part of the housing 90, but the present invention is not limited to this configuration. For example, the present invention may be applied to a wiring guide provided on the upper or side of the housing 90. Furthermore, the configuration in the above embodiment is just one example of the present invention, and various modifications are possible without departing from the spirit of the invention, such as replacing the components of the embodiment with well-known components. [Explanation of symbols]

[0056] 1. Charging inlet 12 Connection terminals 31 Terminal holding section (holder body, outer wall section) 32 Connecting part (Connecting part) 31a,32b,32C External surface 35 Lower wiring guide (wiring guide) 35c side wall section 35d Erection wall section (guide outer wall section) 36 External openings 37,38 Rubber stopper (waterproof plug) 40 Cap component 41a Ground wiring (wiring) 42a Signal wiring (wiring) 43a, 43b Rubber stopper contact part (plug contact part) 44 Side wall section 46A Locking structure 47A Second locking structure 50 Base Holder 60 Inner housing body (holder enlarged section) 90 Housing K1, K2 Cableway X Left / right direction Y (forward / backward direction) Z vertical direction

Claims

1. The charging plug is detachable and has a housing inside that holds the connection terminals, Multiple wiring components are inserted into the housing from outside the housing through a wiring guide formed on the outer surface of the outer wall portion of the housing, Multiple waterproof plugs are inserted together with corresponding wiring components into multiple wiring passages formed within the wiring guide, and these plugs seal the wiring passages. A charging inlet comprising a cap member attached to an external opening in the wiring guide that opens to the outside of the housing, and having a plurality of contact portions that can contact the waterproof plug in the wiring passage from the external opening side.

2. The charging inlet according to claim 1, wherein the cap member has a plurality of U-shaped notches that open toward the outer wall portion in a second direction intersecting the outer wall portion when viewed from a first direction along the outer surface of the outer wall portion, and the corresponding wiring component is inserted into each of the notches.

3. The housing comprises a base holder extending in the first direction and housing a pair of connection terminals for charging, The aforementioned base holder is, A pair of holder bodies, which are cylindrical in shape and extend in the first direction, and which hold the connection terminals, The holder body is connected to one end in the first direction, and comprises an enlarged holder portion that has an enlarged shape overlapping the holder body when viewed from the first direction, The charging inlet according to claim 2, wherein the wiring guide extends in a third direction intersecting the second direction when viewed from the first direction, is arranged across the outer circumference of a pair of holder bodies, and the width in the third direction is wider than the width in the second direction.

4. The aforementioned wiring guide is Viewed from the first direction, the guide outer wall portion extends in the third direction at a position spaced apart from the housing in the second direction, The guide outer wall portion comprises a pair of side wall portions extending in the second direction toward the holder body from the end portion in the third direction toward the holder body, The charging inlet according to claim 3, wherein the pair of side wall portions are provided with a locking structure that locks the cap member and restricts its detachment in the first direction.

5. The charging inlet according to claim 4, further comprising a pair of second locking structures on both sides of the outer wall portion of the guide, avoiding the central portion in the third direction, which lock the cap member (40) and restrict its detachment in the first direction (Y).

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